EE-IS Seminar

Seminar schedule of the Institute for Silicon Photovoltaics: The winter series 2018/19

Seminars take place on Thursdays at 10:15

in the EE-IS lecture hall

(Wilhelm-Conrad-Röntgen Campus, Kekuléstr. 5, 1. Floor, room 227),

coffee and cookies are available 15 minutes before the seminar.

Please note that are exceptions from this rule, which are highlighted in the seminar plan.

EE-IS seminar announcement

PV seminar

Dr. Janardan Dagar will speak about

Interface modification via alkali metal salts for both n-i-p and p-i-n perovskite solar cells and modules

21th of February,

in the Si-Photovoltaics Lecture Hall.

(WCRC Adlershof, 12.8, Kekulestr. 5, 12489 Berlin)

Coffee and cookies will be served at 10:00 a.m.


Organic–inorganic hybrid perovskite are of great promise, showing a high compatibility with perovskite-based tandem devices and modules. However, transport layer(TL)/perovskite interface defects cause detrimental carrier recombination which are responsible for reduced device performance and high hysteresis. Here, we report Interface modification with alkali salts of N-i-P and P-i-N hybrid perovskite solar cells. The efficient defect passivation significantly suppresses the recombination at the TL/perovskite interface, contributing to enhance the solar cell performance, and the elimination of hysteresis. While measured solar cells with alkali metal (potassium) treatment delivered more than 19% efficiency. We also fabricated perovskite mini-module with the same approach and obtained high performing modules. This approach aims at developing the concept of defect engineering, which can be expanded to multiple-element passivation from monoelement counterparts using simple and low-cost inorganic materials.

EMIL Seminar of the Institute for Nanospectroscopy Summer semester 2017

Location: EE-IS lecture hall (room 227), Kekuléstr. 5, WCRC Berlin-Adlershof,
Time: Monday 14:00